Have get_current_user_id() return 0 when pluggable.php is not yet included (which brings the ability to set or get the current user).

Merges [25929] to the 3.7 branch.

fixes #25690.


git-svn-id: https://develop.svn.wordpress.org/branches/3.7@25930 602fd350-edb4-49c9-b593-d223f7449a82
Update the about page for 3.7.1. Tentative bug count.


git-svn-id: https://develop.svn.wordpress.org/branches/3.7@25931 602fd350-edb4-49c9-b593-d223f7449a82